Here is a simple chart illustrating the tuning accuracy of Evertune bridge in V25-ET guitar. Not a scientific study but simple 12 day 1...

This focuses to basic pitch tuning - not intonation setup. Tuning of Floyd Rose Tremolo guitar with locking nut is slightly more complex...

All Taisto Guitars models having Floyd Rose and standard tremolo bridge versions have very easy way to adjust tremolo springs tension....